Ticket #14308: spawnredir.c

File spawnredir.c, 752 bytes (added by leorize, 15 months ago)
Line 
1#include <stdio.h>
2#include <fcntl.h>
3#include <spawn.h>
4#include <errno.h>
5
6#define panic(str) if (ret != 0) { errno = ret; perror(str); return 1; }
7
8int main() {
9 int ret;
10 pid_t child;
11 char* const av[] = { "err", NULL };
12 posix_spawn_file_actions_t child_fd_acts;
13 ret = posix_spawn_file_actions_init(&child_fd_acts);
14 panic("init");
15 ret = posix_spawn_file_actions_addopen(&child_fd_acts, 1, "errlog",
16 O_WRONLY | O_CREAT | O_TRUNC, 0644);
17 panic("addopen");
18 ret = posix_spawn_file_actions_adddup2(&child_fd_acts, 1, 2);
19 panic("adddup2");
20 ret = posix_spawn(&child, "./err", &child_fd_acts, NULL, av, NULL);
21 panic("spawn");
22 return 0;
23}
24